import numpy as np
x = np.array([1,2,3,4])
y = np.array([6,7,8,9])
z = x * y
print(z)

a = np.array([
    [0, 0, 0],
    [10, 10, 10],
    [20, 20, 20],
    [30, 30, 30]
])
# (4,3)
print(a.shape)
b =np.array([0, 1, 2])

# print(b.shape)
# print(a+b)
c = np.array([[1], [2], [3], [4]])
print(c.shape)
print(a+c)